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Permian/Triassic Boundary and Its Correlation in the Daxian‐Xuanhan Area, Northeastern Sichuan Province, China
Author(s) -
Yongsheng MA,
Chuanlong MOU,
Qinyin TAN,
Qian YU,
Ruihua WANG
Publication year - 2008
Publication title -
acta geologica sinica ‐ english edition
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.444
H-Index - 61
eISSN - 1755-6724
pISSN - 1000-9515
DOI - 10.1111/j.1755-6724.2008.tb00324.x
Subject(s) - permian , geology , paleontology , boundary (topology) , china , early triassic , geography , archaeology , mathematical analysis , mathematics , structural basin
There are different opinions about the Permian/Triassic boundary and its correlation in the Daxian‐Xuanhan area because of lacking typical lithological symbols and fossil criterions. Especially, it is very hard to determine the Permian/Triassic boundary in the Daxian‐Xuanhan buried areas. This brings many difficulties to geological research and oil and gas exploration. Based on field investigation and studies of well cores, newly found fossils, lithological characteristics and well log analyses, the authors discussed the Permian/Triassic boundary in the Daxian‐Xuanhan area and brought forward a specific scheme for its determination and regional correlation.